Looper mechanism for tension-envelop machines



J. MORTENSEN.

LOOPER MECHANISM FOR TENSION ENVELOP MACHINES.

7 APPLICATION FILED MAY.1,1920. 1 54,328. PatentedSept. 28, 1920.

2 SHEETS-SHEET 1.

J. MORTENSEN.

LOOPER MECHANISM FOR TENSION ENVELOP MACHINES. APPLICATION FILED MAY 1, I920. 1,354,328. BatentedSeph 28, 1920.

2 SHEETS-SHEET 2.

UNlTED STATES PATENT OFFICE.

JENS MORTENSEN, OF NEW YORK, N. Y., ASSIGNOR TO FRED GOAT COMPANY, OF BROOKLYN, NEVT YORK, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Sept. 28, 1920.

Application filed May 1, 1920. Serial No. 378,069.

To all whom it may concern:

Be it known that I, JnNs MonrnNsnN, a citizen of the United States, residing at New York, in the county of Queens, State of New York, have made a certain new and useful Invention in Looper Mechanism for Tension-Envelop Machines, of which the following is a specification.

This invention relates to machines for manufacturing tension envelops, and more particularly to the looper mechanism employed thereon.

The object of the invention is to provide a looper mechanism which is simple in construction, economical of manufacture, and efficient in operation.

A further object of the invention is to provide a looper mechanism wherein the string of the tension envelop is insured engagement therein.

A further object of the invention is to provide a looper mechanism for tension envelop machines which will permit string varying in thickness to be employed.

Other objects of the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination, location and relative arrangement of parts, all as will be hereinafter more fully set forth, as shown by the accompanying drawings, and finally pointed out in the appended claims.

deferring to the drawings:

Figure 1 shows a view in front elevation of a looper mechanism and actuation means associated therewith embodying my invention.

Fig. 2 is a top plan view of the same.

Fig. 3 is a front view of the looper device.

Fig. 4 is a sectional view taken on the line 4, l, Fig. 3, and looking in the direction of the arrows.

Fig. 5 is a top plan view partially in section, showing the looper device in its assembled position.

Fig. 6 is a rear view of the looper assembled.

The same part is designated by the same reference character wherever it occurs throughout the several views.

In the manufacture of tension envelops, that is, envelops to the body and flap of which are attached buttons by means of eyelets clenched through the envelop material with one end of a string of a predetermined .thread or string,

length, likewise clenched around the eyelet, it was originally the practice to wind the string around the eyelet by hand. Subsequently machines were devised for accomplishing this automatically, but great difficulty has been encountered in machines of this nature in securing a positive operation of the looper device, that is the device that loops the string around the eyelet, due to many causes. It will be obvious that where the looper device fails to operate, the envelop in the machine at the time the opera tion of the looper should be perfect, becomes spoiled, or what is termed in the art a blank, that is, the string is not applied to the envelop, and, therefore, the completed tension envelop .is not produced.

The principal difficulties heretofore encountered in connection with the looper device have been, in the first place, that of constructing a looper which was positive 1n its action, or, in other words, that would engage the string fed to it for each operation thereof. This difficulty to a great extent has, hereofore been eliminated by supplying thread or string of a constant diameter. Strings that are ordinarily supplied for the purpose of tension envelops, however, vary considerably in diameter throughout their length, so that the obtaining of constant diameter thread has been in i self difficult and exceedinglyexpensive, requiring a more expensive grade of string than would ordinarily be used in connection with tension envelops.

It is, therefore, among the special purposes of my present invention to provide a looper which overcomes the foregoing and other disadvantages of similar devices at present employed in the art, and one wherein positive action is obtained by the looper irrespective of diameter variation of the and which is particularly sturdy and strong, and has but one moving part, thereby greatly simplifying the construction of the device and enabling a longer life thereof with fewer parts to become out of order, Worn out or requiring repair or replacement.

Tension envelop machines of the nature referred to hereinbefore are well known in the art, and the same have, therefore, not been illustrated in drawings. As an example of a complete machine to which my looper may be attached, reference is had to the patent to Trenchard, 1,258,829, of March Referringnow to the drawings, I have shown'a shaft 1, which forms'part of the rotating parts of the entire machine, and is rotated in any desired manner from the same source of power, which controls the plungers', string, feeding device, etc., of the entire machine. Suitably mounted on the shaft 1, is provided a cam 2, against which bears one end of a three bell crank lever, the lever being 'pivoted at 4 on theface plate 5, carried by table 6, supported by the frame of the machinein the usual well known manner. An adjustable spring'T, secured at one endof the table 6, and at the other end to the arm 8 of the bell crank lever, normally maintains the arm 3 thereof on the cam surface 2, as will be readily apparent.

The face plate 5 supports the plate 9, which is'provided with an orifice in which is mounted the looper 10 of my 1nvent1on, and

which is more clearly shown in Figs. 3 and 1. The looper 1O referring to the Fig. 4

consists of a circular body member 1.1, having teeth 12, on the exterior surface thereof to forum an engagement with a gear 13, driven in the usual manner from a main shaft of the engine by suitable connections therewith not shown, but well understood in the art. The body 11 is formed in the shape of a ring with an opening 13 therethr'ough to afforda passage for a plunger therethrough and the eyelet pin employed in devices of this structure upon which eyelet'pin the eyelet is located, and around which eyelet the thread-is wound. The rear edge of the ring 11 is formed with a shoulder 15, upon which a plate 16, rests, similarly provided with a central opening 17, therethrough, registering with the opening 13 through the ring 11. Two screws 18 countersunk in the surface of the front of the looper device 11 extend through the member 11, and are screwed into the ring 16. A curved member 20, curved to conform with the shape of the rings 11 and 16, is positioned therebe tween and is formed with wells 21 extending partly through same. The screws 18 extend through the wells 21, and coiled springs 24.- are'wound around the screws 18 with one end thereof seating against the inner surface of the plate 16, and theother ends thereof seating in the wells 21, as illustrated in Fig. 4-. Thus it will be seen that the member 20 is capable of movement in a direction parallelto the axis ofthe looper 11. The member 20 is formed with an arm 28,

which extends through the ring member 16, and is provided with a beveled projection 29, as shown. The peripheral'surface of the looper 11 is provided withan orifice atone pointthereof illustrated at 30, the orifice adapted to be completely closed by the member 20, or open when the member 20 between the wall of the looper 11 and the member 20 the string which as above described has been inserted in the orifice 30. Further rotation of the looper with one end of the-spring thus secured winds the string around the eyelet in the usual well known manner, thereby effecting the .desired loop thereof prior to the clenching of the eyelet, washer and string to the body or flap of the envelop. Many means will readily suggest themselves to those skilled in-the art for effecting the movement of the member 20, and while I have shown and described one means which I have found tobe efficient for this purpose, I do not desire to be limited or restricted thereto. In accordance with the disclosure, however, I mount on the arm 8 of the bell crank lever an arm 10, which is adapted to be interposed between the projection 29 of the member 20 and the ring 16, in accordance with the movement of the bell crank lever 3, 8, relative to the cam 2. The beveled surface of the projection 29 of the member 20 is provided, as will be ap parent to those skilled in the art,'to effect the gradual opening of the space 30 to release the end of the string, after the looping has been effected, and a sharp or sudden triggenlike action in closing the space by sudden release of the member'20, to allow instant movement thereof by means of the springs therein when the string end has been inserted in the opening 30. Many other modifications and changes will readily occur to those skilled in the art'without departing from the spirit and scope of my invention, as defined in the claims.

What I claim as new and useful and of my own invention and desire to secure by Letters Patent is:

1. A looper mechanism for tension envelop machines comprising'a rotatable body provided with an orifice in theperipheral wall thereof, and a movable portion supported by said body and movable axially relative to said body,to open and closesaid orifice, and means for periodically moving said movable portion. V

2. A looper mechanism for tension envelop machines comprising arotatable :body provided with an orifice in the peripheral wall thereof, and a movable portion supported by said body and movable axially relative to said body, means normally tending to retain said movable portion in position to close said orifice, and means for periodically moving said movable portion to open said orifice.

3. A looper mechanism for tension envelop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable portion sup ported by said body and movable axially relative to said body, springs supported by said body and movable portion and tending to normally retain said movable portion in position to close said orifice, and means for periodically moving said movable portion against the action of said springs to open said orifice.

a. A looper mechanism for tension envelop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable portion supported by said body and movable axially relative to said body, means normally tending to retain said movable portion in position to close said orifice, and cam controlled means for periodically moving said movable portion to open said orifice.

5. A looper mechanism for tension envelop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable POItlOD'SIlP- ported by said body and movable axially relative to said body, springs supported by said body and movable portion and tending to normally retain said movable portion in position to close said orifice, and cam controlled means for periodically moving said movable portion to open said orifice.

6. A looper mechanism for tension en velop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable portion supported by said body and movable axially relative to said body, to open and close said orifice, and means for periodically moving said movable portion during the rotation of said body.

7. A looper mechanism for tension envelop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable portion supported by said body and movable axially relative to said body, means normally tending to retain said movable portion in position to close said orifice, and means for periodically moving said movable portion to open said orifice during the rotation of said body.

8. A looper mechanism for tension envelop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable portion supported by said body and movable axially relative to said body, springs supported by said body and movable portion and tending to normally retain said movable portion in position to close said orifice, and means for periodically moving said movable portion against the action of said springs to open said orifice during the rotation of said body.

9. A looper mechanism for tension envelop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable portion supported by said body and movable axially relative to said body, means normally tending to retain said movable portion in posi tion to close said orifice, and cam controlled means for periodically moving said movable portion to open said orifice, during the rotation of said body.

10. A looper mechanism for tension envelop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable portion sup ported by said body and movable axially relative to said body, springs supported by said body and movable portion and tending to normally retain said movable portion in position to close said orifice, and cam controlled means for periodically moving said movable portion to open said orifice during the rotation of said body.

11. A looper mechanism for tension envelop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable portion supported by said body and movable axially relative to said body, springs supported by said body and movable portion and tending to normally retain said movable portion in position to close said orifice, and means for periodically moving said movable portion against the action of said springs to open said orifice and suddenly releasing the same to the action of the springs to close the orifice.

12. A looper mechanism for tension envelop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable portion supported by said body and movable axially relative to said body, springs supported by said body and movable portion and tending to normally retain said movable portion in position to close said orifice, and cam con trolled means for periodically moving said movable portion to open said orifice and suddenly releasing the same to the action of the springs to close the orifice.

13. A looper mechanism for tension envelop machines comprising a rotatable body provided with an orifice in the peripheral wall thereof, and a movable portion sup ported by said body and movable axiall relative tosaid body, springs supported by said body and movable portion and tending to normally retain said movable portion in position to close said orifice, and cam controlled means for periodically moving said movable portion to open said orifice and 7 suddenly releasing the same to the action of the springs to close the orifice during the rotation of said body.

14. A looper mechanism comprising a rotatable body provided with an orifice in the peripheral wall-thereof, a movable portion mounted within said body and provided with a cam surface projecting beyond the plane surface of the body, said movable portion being movable axially relative'to the I looper body to open and close said orifice,

itain said movable portion in position to close said orifice, and means for periodically engaging said cam surface to open and close said orifice.

16; A looper mechanism comprising a rotatable body provided with an orifice in the peripheral wall thereof, a movable portion mounted within said body and provided with a cam surface projecting beyond the plane surface of thebody, said movable portion being movable axially relative to the looper body, springs supported by saidbody and movable portion and tendlng to normally'retain said movable portion in pos1-- tion to close said orifice, and means for periodically engagingthe cam surface'of said movable portion to move the same against the action of said springs to open said orifice. v

17 A looper mechanism comprising a retatable body provided with an orifice in the peripheral wall thereof, a movable portion mounted within said body and provided with a cam surface projecting beyond the plane surface of the body, said movable portion being movable axially relative to the looper body to open and close said ori-' fice, and means for periodically engaging said cam surface to move said movable portion during the rotation of said body.

18. A looper mechanism comprising a rotatable body provided with an orifice in the peripheral wall thereof, a movable portion mounted within said body and provided with a cam surface projectingbeyond the plane surface of the body, said movable portion being movable axially relative to the looper body, means normally tending to 7 retain said movable portion inp'osition to close said orifice, and means for periodically engaging said cam surface to open and close said orifice during the rotation of said body.

19. A looper mechanism comprising a rotatable body provided with an orifice in the peripheral wall thereof, amovable portion mountedwithin said body and provided with a cam surface projecting beyond the plane surface of the body, said movable portion being movable axially relative to the looper body, springs supported by said body and movable portion and tending to normally retain said movable portion in position to close said orifice, andumeans'for periodically engaging the. cam surface of said I, movable portion to move the same against the action of said springs to open said orifice during the rotation ofsaid body.

20.1 1 looper mechanism comprising a rotatable body provided with an orifice in the peripheral wall thereof, a movable portion .mountedwithin said body: and provided with a cam surface projecting beyond'the plane surface of the body, said movable portion being movable axially relative to the looper body, springs supportedby said body and movable portion and tending to normally retain said movable portion in position to close said orifice, and means for periodically engaging the cam surface of said movable portion to move the same 7 against the action of said springs to open said orifice and suddenly releasing the same a 1 thelooper body, springs supported by said body and movable portion and tending to normally retain said movable portion in position to close said orifice, and means for periodically engaging the cam surface of said movable portion to move the same I against the action of said springs to open said orifice'and suddenly releasing'the same to the action'of the springs to close the orifice during the rotation of said body.

In testimony whereof I' have hereunto set my hand on this'27th-day of AprihA. D. 1920.

J ENS MORTENSEN; 

